Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 405 [Rate centres in NPA 405] [Dial plan for NPA 405]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-278 A Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 0 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 1 Oklahoma City OK ENIDOKKI0MD  6272 UNITED STATES CELLULAR - OK 536   2004-05-03   
405-278 2 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 3 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 4 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 5 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 6 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 7 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 8 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-278 9 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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